Abstract: An actuator assembly having an end guide with a first end and a second end, the end guide defining an axis passing through the first and second end, a rod having an outer surface, the rod being movable along the axis through the end guide, a wiper disposed outwardly of the rod and within the end guide, a scraper disposed outwardly of the rod and within the end guide and spaced axially from the wiper towards the second end, a cavity defined between the wiper, the scraper, the outer surface of the rod, and the end guide, and an orifice defined in the end guide between the wiper and the scraper, the orifice defining a flow path for a lubricating fluid to flow into the cavity, wherein, the wiper and the scraper are disposed in contact with the outer surface of the rod for removing debris therefrom.

Abstract: A hydraulic flushing system comprises a hydraulic machine including a case drain, a gearbox having a cavity, and a flushing valve. The case drain is included in a hydraulic pump or a hydraulic motor. The flushing valve is fluidly connected to the case drain, fluidly connected to the cavity, and fluidly positioned between the case drain and the cavity. The flushing valve is configured to selectively allow hydraulic fluid to flow from the case drain to the cavity.

Abstract: An actuator assembly having an end guide with a first end and a second end, the end guide defining an axis passing through the first and second end, a rod having an outer surface, the rod being movable along the axis through the end guide, a wiper disposed outwardly of the rod and within the end guide, a scraper disposed outwardly of the rod and within the end guide and spaced axially from the wiper towards the second end, a cavity defined between the wiper, the scraper, the outer surface of the rod, and the end guide, and an orifice defined in the end guide between the wiper and the scraper, the orifice defining a flow path for a lubricating fluid to flow into the cavity, wherein, the wiper and the scraper are disposed in contact with the outer surface of the rod for removing debris therefrom.

Abstract: The present disclosure relates to a detection system for detecting a liquid level in a rotating driveline component. The detection system may include a first sensor for detecting the liquid, a second sensor for detecting a rotational position of the driveline component, and a receiver for determining the liquid level based on the first and second sensors.

Abstract: A hydraulic flushing system comprises a hydraulic machine including a case drain, a gearbox having a cavity, and a flushing valve. The case drain is included in a hydraulic pump or a hydraulic motor. The flushing valve is fluidly connected to the case drain, fluidly connected to the cavity, and fluidly positioned between the case drain and the cavity. The flushing valve is configured to selectively allow hydraulic fluid to flow from the case drain to the cavity.

Abstract: The present disclosure relates to a detection system for detecting a liquid level in a rotating driveline component. The detection system may include a first sensor for detecting the liquid, a second sensor for detecting a rotational position of the driveline component, and a receiver for determining the liquid level based on the first and second sensors.

Abstract: A final drive transmission includes concentric inner and outer metal face seals at an interface between fixed and rotating housing sections for preventing oil contaminating material from entering the housing. Each face seal includes identical metal face seal rings that are biased into sealing engagement with each by identical frusto-conical elastomeric rings. The metal rings are generally L-shaped in cross section, with the metal rings of the outer face seals being constructed to withstand extreme conditions by making their cross section approximately twice that of the inner metal rings. Together with interface surfaces, the assembled inner and outer face seals define a sealed cavity which contains lubrication oil. A reservoir of oil with an oil level sensor is coupled to the sealed cavity and in this way it is determined whether or not oil is leaking from the cavity so that steps may be taken to avoid a catastrophic failure.

Abstract: The splines of a connection between a connecting collar and transmission input shaft includes a main lubrication oil passage extending axially through an input gear in alignment with a blind bore provided in a wall of a compartment containing the input gear and a second gear meshed with the input gear and partially immersed in an oil reservoir defined by a lower region of the compartment. An oil capture recess is located in a wall region above the blind bore and adjacent a roller bearing supporting one side of the input gear. A bypass lubrication oil passage connects the capture recess to the blind bore. An oil transfer tube is carried by a sheet metal cup mounted in a circular recess joining the blind bore and has opposite ends positioned in the main lubrication oil passage and the blind bore. The bypass passage bypasses the roller bearing.

Abstract: A gearbox comprises a multi-function quill. The quill is provided for loading a bearing and limiting brake-releasing movement of a piston of a brake release.

Abstract: A gearbox comprises a multi-function quill. The quill is provided for loading a bearing and limiting brake-releasing movement of a piston of a brake release.

Abstract: A hydraulic clutch assembly having a hydraulic circuit that is filled with oil even when the clutch is deactivated. The piston of the clutch is provided with a sealing assembly which bifrucates the cylinder into a filled an unfilled portion. The sealing assembly is located so that the centrifugal head attributable to the hydraulic fluid does not exceed the spring force of the biasing springs of the clutch piston. The sealing assembly comprises a circular land that is machined into the piston face.

Abstract: A hydrostatic pump unit is located within a housing which serves also as a hydraulic fluid sump. A displacement control valve for controlling actuators for adjusting the angular position of a swashplate of the pump unit is mounted on the exterior of the housing. Disposed along the axis about which the swashplate is adjustable and joining the swashplate to a shiftable sleeve of the control valve is a feedback shaft which acts to return the valve to a null condition when the swashplate arrives at a commanded new displacement effecting position. The feedback shaft has a passage extending therethrough which acts as a drain connection between the valve and the sump defined by the housing. A check valve is located in the passage for preventing fluid from draining from the housing when the valve is disconnected from the feedback shaft for service.

Abstract: A hydrostatic transmission includes a reversible, variable displacement pump having a swashplate actuator controlled by a pilot-operated displacement control valve. A manually operated displacement control lever is manipulated to opposite sides of a neutral position to effect command signals for causing pilot operation of the displacement control valve to control movement of the swashplate in accordance with the command. A neutral control valve is coupled to the displacement control lever and is operated thereby to a neutral position, wherein it connects the swashplate actuator to sump, when the lever is moved to its neutral position.

Abstract: A hydraulic control is provided for selectively effecting tilt and pitch movement of a dozer blade via selected operation of tilt and pitch control valves which are connected in parallel with each other in two conduit networks, the first being connected to a source of fluid under pressure and respective first work ports of a pair of double-acting hydraulic actuators and the second being connected to a reservoir and to respective second work ports of the actuators. A rotary flow divider is connected in the first conduit network so as to effect equal flow to and from the actuators during operation of the pitch valve and so as to prevent flow between the first work ports of the actuators.

Abstract: A hydrostatic pump unit is located within a housing which serves also as a hydraulic fluid sump. A displacement control valve for controlling actuators for adjusting the angular position of a swashplate of the pump unit is mounted on the exterior of the housing. Disposed along the axis about which the swashplate is adjustable and joining the swashplate to a shiftable sleeve of the control valve is a feedback shaft which acts to return the valve to a null condition when the swashplate arrives at a commanded new displacement effecting position. The feedback shaft has a passage extending therethrough which acts as a drain connection between the valve and the sump defined by the housing. A check valve is located in the passage for preventing fluid from draining from the housing when the valve is disconnected from the feedback shaft for service.